Re: [Qemu-devel] Mac OS X no longer boots from cd

[Programmingkid]

On Mar 20, 2015, at 4:35 PM, John Snow wrote:

> 
> 
> On 03/20/2015 04:08 PM, Programmingkid wrote:
>> 
>> On Mar 20, 2015, at 4:03 AM, Mark Cave-Ayland wrote:
>> 
>>> On 20/03/15 02:38, Programmingkid wrote:
>>> 
>>>> On Mar 19, 2015, at 11:29 AM, Alexander Graf wrote:
>>>> 
>>>>> 
>>>>> 
>>>>> On 19.03.15 15:50, Programmingkid wrote:
>>>>>> 
>>>>>> On Mar 19, 2015, at 3:18 AM, Alexander Graf wrote:
>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>>> Am 19.03.2015 um 02:46 schrieb Programmingkid <address@hidden>:
>>>>>>>> 
>>>>>>>> After just pulled for the March 18 patches, I noticed that my Mac OS 
>>>>>>>> 10.2 cd no longer boots.
>>>>>>> 
>>>>>>> Is this new? If so, can you bisect it?
>>>>>>> 
>>>>>>> Alex
>>>>>>> 
>>>>>>>> The odd thing is, it only fails to boot if there is not hard drive 
>>>>>>>> set. When I add a hard drive, the boot cd continues booting to the 
>>>>>>>> installer. Without the hard drive, and the boot stops half way and 
>>>>>>>> starts saying "still waiting for boot device".
>>>>>>>> 
>>>>>>>> This is the command I used when booting fails:
>>>>>>>> qemu-system-ppc -cdrom Jaguar.iso -m 512 -boot d -M g3beige -prom-env 
>>>>>>>> boot-args=-v
>>>>>> 
>>>>>> This does appear to be new. Are you able to reproduce the issue?
>>>>> 
>>>>> I gave up on testing CD-ROM emulation on Mac machines since it's known
>>>>> bad upstream. Mark has a few RFC patches to fix tit up though, so feel
>>>>> free to give them a try as well ;)
>>>> 
>>>> Ok, I will look at them.
>>>> 
>>>> Mark, can I see some of your CD-ROM patches?
>>> 
>>> Sure, I rebased them fairly recently and posted them both on-list and to
>>> github:
>>> 
>>> http://lists.gnu.org/archive/html/qemu-devel/2015-03/msg01699.html
>>> https://github.com/mcayland/qemu/tree/macio
>>> 
>>> 
>>> ATB,
>>> 
>>> Mark.
>> 
>> There has been a lot of changes to QEMU lately, so I'm not sure how well my 
>> tests work. The March 20th patch list broke QEMU, so I used the March 18th 
>> one to test.
>> 
>> I have tried both the patches from the URL above at the same time. They did 
>> allow me to boot my Mac OS 10.0 cd much further than it had before. The 
>> patches also fixed a problem that prevented me from booting a cd without 
>> having a hard drive attached.
>> 
>> reviewed-by: John Arbuckle <address@hidden>
>> 
>> 
> 
> If you feel like the CD rom boot failure is "new", I'd be very interested to 
> know how recent that failure is.
> 
> The macio RFC might help, but if you have the cycles to do a bisect upstream, 
> I would appreciate that.
> 
> (And I will get to reviewing that RFC next week.)
> 
> Thanks,
> --js

I'm not sure how recent the failure is. I do know this issue is present in QEMU 
2.2.0. Just to note, I am using Mac OS 10.2 boot cd for my tests.